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today's howtos

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HowTos
  • How to install Mattermost desktop client on Debian 11 / Ubuntu 20.04

    So, in this post, you will learn how to install Mattermost desktop client on Debian 11 / Ubuntu 20.04.

    Hello, friends. We recently explained to you how to install Mattermost on Debian 11. But the truth is that although it can be used through a web browser, it is also possible to use a desktop client.

  • BUILD YOUR NETWORK FIREWALL WITH CLEAROS

    Welcome again! today will learn to build a Firewall with ClearOS. in the very last article I listed up the top five firewalls. The one potentially useful firewall, I was not able to cover in the article. So today we will cover a complete step-by-step installation guide for the same.

    The firewall comes in a form of a dedicated OS and can be downloaded from this link. The free-to-use license of ClearOS comes under community license. Yet the UTM is free having no official support. But, still have a good support community and documentation. Let’s go step by step. First, we will have a look into the features of the firewall followed by an installation guide. Finally, we will give the final verdict in form of a conclusion.

  • Zsh shell installation and configuration on Linux

    The Z-shell (zsh) is a modern and very powerful shell: it incorporates and extends many feature of other shells, like Bash. Although it can be used as a powerful scripting language, it is mainly aimed at interactive use, since one of its more prominent feature is the advanced tab completion system. In this tutorial we see how to install zsh in the most commonly used Linux distributions, see what are its startup and shutdown files and how to perform the basic configurations.

  • How to install and manage fonts on Linux

    Fonts are a really important part of the user experience. On the most commonly used Linux-based distributions, there are many packaged fonts which can be installed using the native package manager. Sometimes, however, we may want to install some fonts manually. In this tutorial we see how to perform such operation, and, more generally, how fonts are managed on Linux.

  • How to use LUKS with a detached header

    Linux Unified Key Setup (LUKS) is the de-facto standard block device encryption format used on Linux-based systems. We already discussed some of the features provided by it in a previous tutorial about using a file as a LUKS device key. When using LUKS, encryption metadata is stored on the header which is created at the beginning of the encrypted device (a copy of the header is created at end of the device for redundancy, when using LUKS2).If desired, it is possible to specify that the header should be detached from the device: in this tutorial we see how.

  • How to scrape web pages from the command line using htmlq

    Web scraping is the process of analyzing the structure of HTML pages, and programmatically extract data from them. In the past we saw how to scrape the web using the Python programming language and the “Beautilful Soup” library; in this tutorial, instead, we see how to perform the same operation using a command line tool written in Rust: htmlq.

  • Install Node.js 17 & NPM on Debian 11 Bullseye - LinuxCapable

    Node.js is an open-source, cross-platform, back-end JavaScript runtime environment built on Chrome’s V8 engine to build fast and scalable network applications and back-end APIs. Node.js uses an event-driven, non-blocking IO module that makes it very lightweight and practical. It is a fantastic choice for data-intensive real-time applications across distributed devices.

    NPM is a package manager for the JavaScript programming language maintained by NPM, Inc. NPM is the default package manager for the JavaScript runtime environment Node.js and is arguably the most available repository for Node.JS packages.

    In the following tutorial, you will learn how to install Node.JS 17 from the node source repository on Debian 11 Bullseye.

  • Install UNRAR on Debian 11 Bullseye - LinuxCapable

    UNRAR is widely known and used amongst Windows users. RAR files are much smaller archives and compress better than ZIP for most files by compressing files “together,” saving more space. UNRAR does not come pre-installed natively on Debian, but it is available to install from its repository.

    The following tutorial will show you how to install UNRAR on Debian 11 Bullseye and the basic commands to use it on either your Debian desktop or server.

More in Tux Machines

Arduino Projects: Sun and Power Trackers

  • This sun tracker uses an Arduino to increase solar panel efficiency | Arduino Blog

    With the rapid pace of solar panel installations over the course of the previous decade, there has been an ongoing challenge of trying to improve their efficiency. Apart from the typical silicon crystal photovoltaic cells, there are also more efficient/expensive cells known as concentration photovoltaics (CPV), which rely on a set of mirrors to focus sunlight into a small multijunction cell. Although this technology reduces the size and material requirements, it also requires precise sun tracking for peak performance. Ruediger Loechenhoff has been able to create a far cheaper solar tracker controller, which relies on an Arduino Uno to drive a set of two motors that position the panel. To achieve this, the Uno was connected to a 9-axis MPU-9250 compass module for internal positioning, a DS3231 real-time clock for accurate timing, and a DIY shading beam sunlight sensor to detect optimal angles. Operating the tracker is also quite simple since the firmware only requires an occasional calibration step after a set number of days.

  • This Arduino device can anticipate power outages with tinyML | Arduino Blog

    Our reliance on electronic devices and appliances has never been higher, so when the power goes out, it can quickly become an unpleasant and inconvenient situation, especially for those who are unable to prepare in time. To help combat this problem, Roni Bandini has devised a device he calls “EdenOff,” which is placed inside an electrical outlet and utilizes machine learning at the edge to intelligently predict when an outage might occur. Developed with the use of Edge Impulse, Bandini began by creating a realistic dataset that consisted of three columns that pertain to different aspects of an outlet: its voltage, the ambient temperature, and how long the service has been working correctly. After training a model based on one dataset for regular service and the other for a failure, his model achieved an excellent F-1 score of .96, indicating that the model can forecast when an outage might take place with a high degree of accuracy.

LibreOffice and More

  • LibreOffice at the Univention Summit 2022

    After two years of pandemic restrictions, more and more in-person events are now taking place. Members of the LibreOffice community attended the recent Univention Summit 2022 in Bremen, northern Germany. They had a stand with LibreOffice merchandise, talked to visitors and answered questions.

  • May 2022, Month of LibreOffice Awards

    In May 2022, LibreOffice has received two Awards: SourceForge’s Open Source Project of the Month, and Software Informer’s Editor’s Pick.

  • Do While – Loop Example in Python | Mark Ai Code

    Loops are an important and widely utilized element in all current programming languages. A loop is the finest solution for automating a certain repeated operation or preventing yourself from writing repetitive code in your projects. Loops are sequences of instructions that are executed repeatedly until a condition is fulfilled. Let’s take a closer look at how Python loops function.

Proprietary Software and Microsoft Proxies

  • Patch now: Zoom chat messages can infect PCs, Macs, phones with malware

    Zoom has fixed a security flaw in its video-conferencing software that a miscreant could exploit with chat messages to potentially execute malicious code on a victim's device. The bug, tracked as CVE-2022-22787, received a CVSS severity score of 5.9 out of 10, making it a medium-severity vulnerability. It affects Zoom Client for Meetings running on Android, iOS, Linux, macOS and Windows systems before version 5.10.0, and users should download the latest version of the software to protect against this arbitrary remote-code-execution vulnerability. The upshot is that someone who can send you chat messages could cause your vulnerable Zoom client app to install malicious code, such as malware and spyware, from an arbitrary server. Exploiting this is a bit involved, so crooks may not jump on it, but you should still update your app.

  • SAP attracts further criticism for Russia presence, despite promise to leave

    A Ukrainian minister has accused software giant SAP of continuing to operate in Russia despite the German vendor previously vowing to withdraw from the aggressor nation. In the months following Russia's invasion of Ukraine, SAP attracted criticism as it continued to support installations of its software in Russia and cloud services used by Russian businesses, including state-owned bank Sberbank.

  • OpenLogic by Perforce: Why we support OSI [Ed: OSI boasts about being controlled by Microsofters]
  • OpenLogic by Perforce Announces Sponsorship of Rocky Enterprise Software Foundation [Ed: Microsoft proxy lays its hands on Rocky after it ran away from Microsoft]

Videos: Steam Deck, LinuxFX, Brave Beta on Debian 11, and Destination Linux 279